The find also reveals where the genus, known as Ptychodus, sat on the shark evolutionary tree, and other previously unknown traits of this “long-standing enigma,” according to a study ...

A rendering by an artist depicting two Ptychodus sharks feasting on sea turtles and ammonites in the ... More expanse of the open ocean. In the vast expanse of time, some mysteries persist longer ...

A restoration of the giant, durophagous shark Ptychodus, courtesy paleo-artist Matt Celeskey. The study of prehistoric sharks is no easy task. Specialists in other branches of vertebrate ...

The well-preserved bones of the creature date back to the Cretaceous period. It was of the genus Ptychodus, an extinct group of durophagous sharks that had large teeth. Paleontologists believe the ...

Fossil teeth from sharks in the genus Ptychodus have made their way into museums for over 200 years, and while some members of this group clearly grew massive, the rest of their anatomy remained ...

Ptychography reconstructions of architecture of moth wings Ptychography reconstructions of architecture of moth wings Ptychography reconstructions of architecture of moth wings a Ptychography ...

The remains belong to a little-known prehistoric shark genus called Ptychodus, which has been a “long-standing enigma” for scientists, according to the new paper, published Wednesday in the ...

A restoration of the giant, durophagous shark Ptychodus, courtesy paleo-artist Matt Celeskey. The study of prehistoric sharks is no easy task. Specialists in other branches of vertebrate ...